5 Amp 110v Variable Autotransformer Voltage Regulator Powerstat 0-130v Output Rated at 110V input with an output voltage of 0-130V Maximum output current is 5A with a capacity (KVA) of 0.5 The output is also AC and it does not affect the cycles. So if you had a 130 volt AC input at 60 Hz This auto transformer and change the AC from 130 volts to perhaps 90 volts (depending on your requirements) The 60Hz cycle would not be affected